Technical Data
CompareThermometer
| Measuring Principle | Resistance Temperature Detector |
| Characteristic / Application | metric style compact temperature probe fast response time threaded process connection with or without neck |
| Thermowell / protection tube | without (not intended to use with thermowell) |
| Insert / probe | pipe version, isolated wires, not flexible |
| Outer diameter protection tube / Insert | 4,00 mm (0,16") 6,00 mm (0,24'') |
| Max. immersion length on request | up to 600,00 mm (23,62'') |
| Material protection tube/ thermowell | 1.4404 (316L) |
| Process connection | male thread: G1/4" G1/2" NPT1/4" NPT1/2" M14x1.5 M18x1.5 BSPT R1/2" |
| Tip shape | straight |
| Surface roughness Ra | 0,8 μm (32 μin.) |
| Operating temperature range | PT 100: -50 °C ...200 °C (-58 °F ...392 °F) |
| Max. process pressure (static) | at 20 °C: 100 bar (1.450 psi) |
| Accuracy | class A acc. to IEC 60751 |
| Response time | t50 = 1 s t90 = 2 s |
| Integration head transmitter | no (4…20mA Signal) |
| Certification | Marine approval UL 3111-1 |
The TMR31 offers excellent value for money, saves installation space, is simple to install and commission, operates reliably and meets the requirements of modern measurement technology. The built-in vibration-resistant thin-film sensor guarantees the fastest response time and the highest operational safety.
Advantages
Compact design, fully stainless steel construction
Very short response time
Small insertion depth for precise measurement
4-wire Pt100 output or PC-programmable transmitter with 4 to 20 mA output
Device configuration and visualization using the free ReadWin® 2000 PC operating software
Displays sensor open-circuit or short-circuit fault information, adjustable according to NAMUR NE43
Marine approval
Spare Parts & Accessories 15
15 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71367414 | Copper sealing ringPacking unit: 10 pieces | Details |
| 51007599 | SealSealing cone G1/2 | Details |
| 71535690 | Welded socket with collar d6 PEEK + screw | Details |
| 71535691 | Welded socket with collar, d6, PEEK, without screw | Details |
| TA50- | Mounting parts, compression fitting TA50Screw in. | Enquire |
| 71744221 | Spare part kit TA50-GB/NB/HB/PB/BB/CB/DBPacking unit: 10 pieces, d=6.1mm. Material: 316/1.4401. | Details |
| 71744222 | Spare part kit TA50-GP/NP/HP/PP/BP/CP/DPPacking unit: 10 pieces, d=6.1mm. Material: PTFE. | Details |
| TXU10- | Instrument Commissioning Kit TXU10用于可以PC编程调试的设备 程序设置+用于带USB接口的PC的连接线 | Enquire |
| 51007657 | TXU10 Upgrade AdapterAdapter Upgrade TXU10 | Details |
| RXU10- | Data Manager Accessory RXU10 | Enquire |
| 71535693 | M12 elbow plug ready for cable, IP67, PG7 | Details |
| 71589963 | Cable connector M12 IP69k 5m | Details |
| 51005148 | 5 m cable, 4x0.34 mm², PVC5米线缆，4x0.34m㎡，PVC M12x1 拐角航空插头， 螺栓 Cu Sn/NI，IP67 | Details |
| 71217708 | Core wire set 4p D18 IP69KPVC cable, 4x0.34mm2 (22 AWG) with M12x1 coupling nut made of epoxy coated Zinc, straight socket contact, screw plug, 5m (16.4ft). | Details |
| RIA15- | F+ Loop-Powered Indicator RIA15单通道，无需单独供电 回路供电 5位液晶显示 可选HART通信 可选背光显示 棒状图 10%分辨率 | Enquire |
Configurator / Comparison
Measuring principle video
Click to playManuals & Documents 7
All documents for this model7 documents · click to expand
BA 紧凑型温度计 TMR31, TMR35 Chinese
BA Compact thermometer TMR31, TMR35 English
ReadWin® Quick Setup English
TI 焊接接头、过程转接头和法兰 Chinese
TI 紧凑型温度计TMR31, TMR35 Chinese
TI Weld-in adapter, process adapter and flanges English
TI Compact thermometer TMR31, TMR35 English
Case Studies
Municipal Wastewater Treatment · thermistor — Application Case
Project Overview
The site is the inlet, biological and outlet stages of a municipal plant. The customer wanted thermistor properly configured on the existing plant, with the aim of high-accuracy temperature measurement with platinum resistance elements.
Technical Challenges
What actually causes trouble is high solids and corrosive fractions, with large diurnal flow swings, and effluent parameters drift and probes foul with sludge and biofilm. All of this means the thermistor configuration has to involve choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth.
Configuration
Supply and installation were organised through the temperature range: temperature solution matched to measuring point and response needs. On site this meant choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth, checked line by line against: stable compliance with Grade 1A discharge limits and online data reporting.
Performance
After commissioning the outcome is clear accuracy advantage at low temperatures, giving tighter process windows, and the readings are now used for process tuning.
Food & Beverage · thermistor — Application Case
Site Conditions
This is a Food & Beverage customer whose plant is at dosing, pasteurising, filling and CIP stages. The main task was high-accuracy temperature measurement with platinum resistance elements.
The Problem
The difficulty lies in syrups, dairy and beverages that scale easily, under strict hygienic requirements; at the same time frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles. Specification therefore means choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth.
What We Did
We took a temperature range approach — temperature solution matched to measuring point and response needs. Delivery was built around choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth, with point-by-point checks on: food-safety and hygienic design per 3-A / EHEDG.
Operating Outcome
In service the system performs as intended — clear accuracy advantage at low temperatures, giving tighter process windows, with routine maintenance falling noticeably.
Chemical & Pharmaceutical · thermistor — Application Case
Application Context
reactors, metering vessels and finished-product tanks is a typical Chemical & Pharmaceutical duty. The project started from thermistor, focusing on high-accuracy temperature measurement with platinum resistance elements.
Process Constraints
corrosion plus Ex protection shortens instrument life and makes downtime costly, and highly corrosive media with solvents and crystallisation, partly in explosive atmospheres only amplify it. The thermistor specification must therefore cover choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth.
Delivery Approach
Delivery was handled as the temperature range — temperature solution matched to measuring point and response needs. Execution centred on choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth, together with Ex certification and GMP traceability of records.
Field Results
Operation shows the benefit clearly — clear accuracy advantage at low temperatures, giving tighter process windows, with confidence in this measuring point improving markedly.
Power & Energy · thermistor — Application Case
Customer Profile
The typical setting in Power & Energy is boiler feedwater, turbine condensate and FGD/DeNOx systems. The measuring point is thermistor; the focus is high-accuracy temperature measurement with platinum resistance elements.
Key Difficulties
Conditions are high temperature and pressure with both steam and saline water and, on top of that, drift under high temperature and pressure, with very costly unplanned outages, which a standard configuration cannot handle for long. The design therefore starts with choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth.
Implementation
The scope ran through the temperature range: temperature solution matched to measuring point and response needs. Technically it hinges on choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth, and on these requirements: compliance with power-industry codes and unit availability targets.
Customer Benefit
In practice this means clear accuracy advantage at low temperatures, giving tighter process windows, which cut the workload on the site maintenance team.
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